diff --git a/phpstan.neon b/phpstan.neon
index 3298475..5c8fe75 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -19,7 +19,6 @@ parameters:
         - '#Call to an undefined method Illuminate\\Database\\Eloquent\\Model::scoutMetadata\(\).#'
         - '#Call to an undefined method Illuminate\\Database\\Eloquent\\Model::searchableAs\(\).#'
         - '#Call to an undefined method Illuminate\\Database\\Eloquent\\Model::toSearchableArray\(\).#'
-        - '#Call to an undefined method Illuminate\\Database\\Eloquent\\Builder<Illuminate\\Database\\Eloquent\\Model>::unsearchable\(\).#'
         - '#Call to an undefined method Illuminate\\Support\\HigherOrderCollectionProxy<string, Illuminate\\Database\\Eloquent\\Model, Illuminate\\Database\\Eloquent\\Collection>::pushSoftDeleteMetadata\(\).#'
         - '#Call to an undefined method Illuminate\\Support\\HigherOrderCollectionProxy<string, Illuminate\\Database\\Eloquent\\Model, Illuminate\\Database\\Eloquent\\Collection>::getScoutKey\(\).#'
         - '#Parameter \#1 ...\$arrays of function array_merge expects array, int given.#'
diff --git a/src/Engines/OpenSearchEngine.php b/src/Engines/OpenSearchEngine.php
index 0bd56fc..f50f32c 100644
--- a/src/Engines/OpenSearchEngine.php
+++ b/src/Engines/OpenSearchEngine.php
@@ -285,9 +285,14 @@ public function getTotalCount($results): int
      */
     public function flush($model): void
     {
-        $model->newQuery()
-            ->orderBy($model->getKeyName())
-            ->unsearchable();
+        $this->client->deleteByQuery([
+            'index' => $model->searchableAs(),
+            'body' => [
+                'query' => [
+                    'match_all' => new \stdClass(),
+                ],
+            ],
+        ]);
     }
 
     /**
diff --git a/tests/OpenSearchEngineTest.php b/tests/OpenSearchEngineTest.php
index 1f3f70a..a8a446b 100644
--- a/tests/OpenSearchEngineTest.php
+++ b/tests/OpenSearchEngineTest.php
@@ -14,7 +14,6 @@
 use Laravel\Scout\Jobs\RemoveFromSearch;
 use Mockery as m;
 use OpenSearch\Client;
-use OpenSearch\ClientBuilder;
 use Zing\LaravelScout\OpenSearch\Engines\OpenSearchEngine;
 use Zing\LaravelScout\OpenSearch\Tests\Fixtures\CustomKeySearchableModel;
 use Zing\LaravelScout\OpenSearch\Tests\Fixtures\EmptySearchableModel;
@@ -572,19 +571,23 @@ public function testAModelIsRemovedWithACustomAlgoliaKey(): void
 
     public function testFlushAModelWithACustomAlgoliaKey(): void
     {
-        $builder = m::mock(Builder::class);
-        $builder->shouldReceive('unsearchable')
-            ->once()
-            ->withNoArgs();
         $model = m::mock(CustomKeySearchableModel::class);
-        $model->shouldReceive('getKeyName')
+        $model->shouldReceive('searchableAs')
+            ->once()
             ->withNoArgs()
             ->andReturn('table');
-        $model->shouldReceive('newQuery->orderBy')
-            ->with('table')
-            ->andReturn($builder);
-
-        $engine = new OpenSearchEngine(ClientBuilder::fromConfig([]));
+        $client = m::mock(Client::class);
+        $client->shouldReceive('deleteByQuery')
+            ->with([
+                'index' => 'table',
+                'body' => [
+                    'query' => [
+                        'match_all' => new \stdClass(),
+                    ],
+                ],
+            ])
+            ->andReturn('table');
+        $engine = new OpenSearchEngine($client);
         $engine->flush($model);
     }